InteliMains
NT
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf,
©ComAp – April 2015
147
When the BO CB close/open opens, there is 5 resp. 2 sec delay for the breaker to respond before a
CB fail is detected. In such case, if CB OFF coil is used for opening the CB and CB fail occurs during
opening the CB, the signal CB OFF coil is automatically extended until the breaker opening is
detected (evaluated as CB status).
2 sec when the CB is used for synchronizing
5 sec in other cases
0
1
0
1
0
1
BO/BI
CB fd
b
CB fail
CB cl
ose
/open
0
1
0
1
0
1
2s
5s
In case that CB fail is detected after switching the controller on (CB is closed), the CB OFF coil
output is activated immediatelly.
Important:
In case that MCB feedback is active (MCB is expected to be
closed) and “MCB fail” is
reported due to previous incorrect manipulation of MCB, in the moment of Fault reset, the
MCB fail is cleared and the controller internally goes to “closed” state. I.e. MCB fdb status
is confirmed and the output MCB close/open is energized.
9.2.4
Follow function for breaker control in AUT mode
Only in MCB application.
Using setpoint
ProcessControl:
BrkCtrl in AUT
behavior of breaker control can be adjusted.
P
ROCESS
C
ONTROL
:
B
RK
C
TRL IN
AUT
C
ONTROLLER BEHAVIOR
NORMAL
Breaker is controller by the controller. It is possible to fault reset
(press fault reset twice) MCB fail alarm which happened due to
previous incorrect manipulation with the breaker. This is possible
if the breaker was closed externally and the Mains is healthy.
Controller accepts the state of the breaker and continues in
normal operation.
COX (FOLLOW)
Breaker is controlled externally and the controller does not
attempt to control it nor any alarms are issued. Synchronization
process can be started by the F
ORCE
SYNC
input if it is allowed by
the setpoints
ProcessControl:
Synchro enable
and
ProcessControl:
ParallelEnable
(
Synchro enable
must be set to
REVERSE and
ParallelEnable
must be set to ENABLED).
Synchronization in COX(FOLLOW) does not have any timeout
and controller keeps voltages synchronized indefinitely (i.e. until
F
ORCE SYNC
is opened or the breaker is closed externally).
